Known practitioners

Behind the scenes

The Jelly-Legs Jinx seems to share some similarities with Tarantallegra, although the effects as described are slightly different; Tarantallegra makes the victim's legs thrash about uncontrollably, whereas this spell makes their legs shake.

When asked whether anything in the series reflects any of her childhood fantasies, author J. K. Rowling says, "...who wouldn't want to be able to use the Jelly-Legs Curse?"[4]. This seemingly confirms that it is a curse, rather than a jinx.

There have been various mistranslations of this spell's name, such as "Jell-O Legs", "Jam Legs", "Broken Legs" and "Twisted Limping Legs", in the Chinese, Japanese and Vietnamese versions of the books[5]